chore(core): delete BaseMemory, move to langchain-classic (#33373)

Author: mdrxy

libs/langchain/langchain_classic/agents/agent_toolkits/conversational_retrieval/openai_functions.py

@@ -1,7 +1,6 @@
 from typing import Any
 
 from langchain_core.language_models import BaseLanguageModel
-from langchain_core.memory import BaseMemory
 from langchain_core.messages import SystemMessage
 from langchain_core.prompts.chat import MessagesPlaceholder
 from langchain_core.tools import BaseTool
@@ -11,6 +10,7 @@
     AgentTokenBufferMemory,
 )
 from langchain_classic.agents.openai_functions_agent.base import OpenAIFunctionsAgent
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.memory.token_buffer import ConversationTokenBufferMemory
 
 

libs/core/langchain_core/memory.py renamed to libs/langchain/langchain_classic/base_memory.py

@@ -10,11 +10,10 @@
 from abc import ABC, abstractmethod
 from typing import Any
 
-from pydantic import ConfigDict
-
 from langchain_core._api import deprecated
 from langchain_core.load.serializable import Serializable
 from langchain_core.runnables import run_in_executor
+from pydantic import ConfigDict
 
 
 @deprecated(

libs/langchain/langchain_classic/chains/base.py

@@ -20,7 +20,6 @@
     CallbackManagerForChainRun,
     Callbacks,
 )
-from langchain_core.memory import BaseMemory
 from langchain_core.outputs import RunInfo
 from langchain_core.runnables import (
     RunnableConfig,
@@ -38,6 +37,7 @@
 )
 from typing_extensions import override
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.schema import RUN_KEY
 
 logger = logging.getLogger(__name__)

libs/langchain/langchain_classic/chains/conversation/base.py

@@ -1,11 +1,11 @@
 """Chain that carries on a conversation and calls an LLM."""
 
 from langchain_core._api import deprecated
-from langchain_core.memory import BaseMemory
 from langchain_core.prompts import BasePromptTemplate
 from pydantic import ConfigDict, Field, model_validator
 from typing_extensions import Self, override
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.chains.conversation.prompt import PROMPT
 from langchain_classic.chains.llm import LLMChain
 from langchain_classic.memory.buffer import ConversationBufferMemory

libs/langchain/langchain_classic/memory/buffer.py

@@ -1,11 +1,11 @@
 from typing import Any
 
 from langchain_core._api import deprecated
-from langchain_core.memory import BaseMemory
 from langchain_core.messages import BaseMessage, get_buffer_string
 from langchain_core.utils import pre_init
 from typing_extensions import override
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.memory.chat_memory import BaseChatMemory
 from langchain_classic.memory.utils import get_prompt_input_key
 

libs/langchain/langchain_classic/memory/chat_memory.py

@@ -7,10 +7,10 @@
     BaseChatMessageHistory,
     InMemoryChatMessageHistory,
 )
-from langchain_core.memory import BaseMemory
 from langchain_core.messages import AIMessage, HumanMessage
 from pydantic import Field
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.memory.utils import get_prompt_input_key
 
 

libs/langchain/langchain_classic/memory/combined.py

@@ -1,9 +1,9 @@
 import warnings
 from typing import Any
 
-from langchain_core.memory import BaseMemory
 from pydantic import field_validator
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.memory.chat_memory import BaseChatMemory
 
 

libs/langchain/langchain_classic/memory/readonly.py

@@ -1,6 +1,6 @@
 from typing import Any
 
-from langchain_core.memory import BaseMemory
+from langchain_classic.base_memory import BaseMemory
 
 
 class ReadOnlySharedMemory(BaseMemory):

libs/langchain/langchain_classic/memory/simple.py

@@ -1,8 +1,9 @@
 from typing import Any
 
-from langchain_core.memory import BaseMemory
 from typing_extensions import override
 
+from langchain_classic.base_memory import BaseMemory
+
 
 class SimpleMemory(BaseMemory):
     """Simple Memory.

libs/langchain/langchain_classic/memory/vectorstore.py

@@ -5,10 +5,10 @@
 
 from langchain_core._api import deprecated
 from langchain_core.documents import Document
-from langchain_core.memory import BaseMemory
 from langchain_core.vectorstores import VectorStoreRetriever
 from pydantic import Field
 
+from langchain_classic.base_memory import BaseMemory
 from langchain_classic.memory.utils import get_prompt_input_key